Harsh Reality Pics - The Black Museum

cotton like fluff around the oil strainer rock catcher in the sump, causing an oil circulation problem. The RGS and 120 Jota have a finer mesh than 180's, so is more prone to this (rare) phenomena

the cause of which is an oil change and changing brands as well, no one knows which brands are OK and compatible with others, and which brands follow on and create this fluff. If in doubt or changing oil brands, do only 100 miles on the new stuff and do the (very tedious) exhaust off and remove strainer to check, plus a second jug of your new chosen oil, if you see any fluff, then you have to do this again after the next 100 miles and continue until it stops, usually the second one does it, I have only known three bikes to be thus affected in 45 years, maybe this is the fourth.
CLEM
 
Something to do with the additives used in different brands not being compatible and reacting, especially when mixing mineral with synthetic? I thought it was urban myth?
 
Got to love it when you get home from work and the workshop fairies have been busy overnight😁

Previous owner needs a new torque wrench. Maybe they had one that lied
 

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I thought that replacing early blocks with RGS blocks WAS the fix back then. Mine was done without consent at the time but it was smart anyway. It did add some to the bill I got from Eades but in the end, it was good to do.
 
Bear in mind the factory RGS manual states 28 and 32ft-lb for the M9 cylinder studs, which we now know is too much. It could just have been from that, along with heat & age.
 
breganzane said:
Bear in mind the factory RGS manual states 28 and 32ft-lb for the M9 cylinder studs, which we now know is too much. It could just have been from that, along with heat & age.
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That was my Idea too when I saw the damage. Too much torque to the bolts.
 
Clem, I’ve seen the same fluff that you mentioned on a RGS that I bought off a guy. Pulled the filter out and it was covered in that fluff. Pulled the cam cover and number 1 exhaust cam block had the dreaded grey ally paste oozing out🙁. Ended up selling the bike back to the guy I bought it off for more than I paid. I had done a lot of cosmetic work the bike , changing fairing, tank seat and side covers. Yes I did tell him about the motor but he still wanted the bike back so I sold it😀👍
I will see if I’ve got any pics of the fluff and if I have will post them.
Tom
 
I wish that I had taken pictures of the fluff in the motors that I saw, but one of them was involving a potential legal case, the bike was serviced with no other work required, purely a service, by a mechanic that is no longer involved, but at premises that everyone would instantly recognize, I don't think that mineral to synthetic is more of a risk that mineral/ mineral or synthetic/synthetic, same applies to mineral/vegetable. The bike was riden away and running well, the journey duration of about 185 miles was cut short by about 20, when the exhaust cam, or more directly the RHS exhaust cam bearing, seized and was attempting tostop the motor, early bail ot may have saved a great deal of damage, all cam lobes were cooked, the mechanic agreed to repair the bike for cost of materials only,
WHY NOT AN FOC REPAIR!!!!!, I would not have taken that, but the bike never ran well after that (used parts??? not new parts???) and the owner sold it on, not owning a Laverda for decades and then buying a Corsa, which he still has, but due to Covid and far too many McDonalds meals (London cabbie working nights) he is about to enter a care home to get what remaining life he is able to have.
CLEM
 
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